Active Middle Ear Implantation for Patients With
Sensorineural Hearing Loss and External Otitis:
Long-Term Outcome in Patient Satisfaction
Joost W. Zwartenkot, Javad Hashemi, Cor W. R. J. Cremers, Jef J. S. Mulder,
and Ad F. M. Snik
Radboud University Nijmegen Medical Centre, Donders Institute for Brain, Cognition and Behavior,
Department of OtorhinolaryngologyYHead and Neck Surgery, Nijmegen, The Netherlands
Objective: To study long-term subjective benefit of patients with
sensorineural hearing loss and chronic external otitis who use
active middle ear implants.
Design: Single-subject repeated measures in a preintervention
and postintervention design with multiple postintervention mea-
surements (questionnaires).
Setting: Tertiary academic center.
Patients: Moderate-to-severe sensorineural hearing loss (n = 56)
with severe chronic external otitis who use the Vibrant Sound-
bridge (VSB) or Otologics MET middle ear implant systems.
Main Outcome Measure: Changes in hearing disability and
handicap as evaluated using the Abbreviated Profile of Hearing
Aid Benefit (APHAB), the Nijmegen Cochlear Implant Ques-
tionnaire (NCIQ), and the Glasgow Benefit Inventory (GBI).
Results: Data of 33 patients (mean postoperative duration of
7.5 yr) were available. No difference in subjective results was
found between the VSB and Otologics MET patient groups.
Total percentage of nonuse was 13%. Long-term APHAB
results show a significant decrease in disability for 43% of the
patients compared with 54% at 1-year postoperative. NCIQ
results show a significant benefit for all subdomains with a
negative trend over time. The GBI results show a significant
long-term increase in quality of life with positive scores for
82% of the assessed patients.
Conclusion: Long-term postoperative patient satisfaction and
quality of life results show a significant difference compared with
preoperative measurements, with conventional hearing aids. A
negative trend over time is found on all questionnaires, which
might reflect patient aging (increase of hearing loss) or habit-
uation to a situation with fewer concerns regarding a patient’s
external otitis. Key Words: Abbreviated Profile of Hearing
Aid BenefitVActive middle ear implantsVGlasgow Benefit
InventoryVNijmegen Cochlear Implant QuestionnaireVOtologics
METVQuality of lifeVSubjective benefitVVibrant Soundbridge.
Otol Neurotol 34:855Y861, 2013.
Some patients with hearing loss decline to use acoustic
hearing aids because of cosmetic reasons or complaints
about poor sound quality (1Y3). For other patients, appli-
cation of acoustic devices might be troublesome because
of therapy-resistant chronic external otitis. Although ven-
tilated or specially coated ear moulds might be beneficial
for the latter patient group, many patients cease to use the
hearing device because of pain or itching (4). For such
patients, an active middle ear implant (AMEI) has been
advocated.
An AMEI comprises an externally worn audio proces-
sor and an implanted signal processor and output trans-
ducer. The transducer is a specially developed implantable
magnetic actuator that is in contact with the middle ear
ossicles. The audio processor is magnetically connected to
the implant and communicates with it through the skin by
means of radiofrequency signals. AMEI are generally be-
lieved to be more attractive from a cosmetic point of view
as the audioprocessor is easily hidden by hair. Further-
more, better sound quality has been claimed over conven-
tional hearing aids (1Y3), and as the device bypasses the
external ear canal, it might be the solution for patients with
chronic external otitis (5).
In 1996, we started implanting the semi-implantable
Otologics MET (MET) device (Otologics LLC, Boulder,
CO, USA) and the Vibrant Soundbridge (VSB) mid-
dle ear implant (Med-El, Innsbruck, Austria) in patients
with sensorineural hearing loss who also had severe,
therapy-resistant external otitis, thereby avoiding the use
of ear moulds.
Address correspondence and reprint requests to Joost W. Zwartenkot,
M.D., Department of OtorhinolaryngologyYHead and Neck Surgery,
Radboud University, Nijmegen Medical Center, P.O. Box 9101 6500 HB
Nijmegen, The Netherlands; E-mail: j.zwartenkot@kno.umcn.nl
The authors disclose no conflicts of interest.
Otology & Neurotology
34:855Y861 Ó 2013, Otology & Neurotology, Inc.
855
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